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1. EFFECT OF ZINC AND SILICON ON TRIBOCORROSIVE WEAR BEHAVIORS OF HOT FORGED CuZn3Fe2Si3 AND CuZn15Si4 ALLOYS.

Author

TAZE, H., AHLATCI, H., YAŞIN, S., ERGIN, D., TÜREN, Y., ÖZEŞER, Z., BIROL, F., TOZKOPARAN, and ÇITRAK, T.

Subjects
COPPER alloys, LEAD alloys, COPPER corrosion, HEAT treatment, CORROSION in alloys
Abstract

The production and characterization of UNS C65620 (CuZn3Fe2Si3) and UNS C87800 (CuZn15Si4) coded alloys were investigated. The alloys poured into the gravity die casting method were hot forged with a ram, followed by stress relief annealing heat treatment. While the formation of Cu4Si, Cu0.83Si0.17 and Cu5Zn8 phases were detected in the structure of the UNS C65620 coded alloy, Cu12.75SiZn2.92 and Cu3Zn intermetallics with the phases given above were observed in the structure of the alloy containing more Zn and Si. The formation of phases containing more Si and Zn resulted in an increase in both the hardness and strength of the UNS C87800 coded alloy, while the decrease in the % reduction of area and the observation of dynamic deformation aging caused the increase in both the wear rate and deformation hardening rate, which led to embrittlement of the alloy. The deterioration of the corrosion resistance of the UNS C87800 coded alloy can be attributed to the formation of Zn-rich corrosion products on the surface during corrosion. [ABSTRACT FROM AUTHOR]

Published
2024
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9. Experimental Comparison of Straight Flanging and Rotary Die Bending Based on Springback

Author

Turan Se, Mevlüt Türköz, Haydar Livatyali, and Birol F

Subjects
business.product_category, Materials science, Bending (metalworking), Flanging, business.industry, Die (manufacturing), Structural engineering, business
Abstract

Springback in sheet bending is a well-defined phenomenon; however, variation of springback is difficult to control causing quality problems in especially mass-produced goods such as home appliances. As an alternative to straight flanging, the rotary die bending process offers reduced springback as well as reduced geometric variation; however, there is little knowledge in the literature. The effects of process parameters on the springback behavior of straight flanging and rotary die bending as applied to home appliance side panels are investigated experimentally. For each flange bending method, effects of die radius, punch-die clearance, rolling direction, flange length, and material supplier on springback are tested on EN DC01 carbon and SAE 430 stainless steel sheets. A full factorial experimental design was applied to investigate the factor interactions as well as the main effects using ANOVA. In both methods, die radius was the most dominant factor on springback, clearance being the second, and the inevitable material property variations being the third one. Nevertheless, in rotary die bending, springback values were smaller with significantly less scatter compared to straight flanging. Consequently, rotary die bending is a much more preferable process especially in mass production performed with narrow profit margins.

Published
2021

11. ROOTS OF PELL POLYNOMIALS.

Author

BIROL, F., KORUOGLU, and DEMIR, B.

Subjects
HYPERBOLIC functions
Abstract

In this paper we consider the Pell polynomials. We express these polynomials as complex hyperbolic functions. Using this we obtain roots of Pell polynomials. Further we give some interesting identities about images of roots of a polynomial under another member of the family. [ABSTRACT FROM AUTHOR]

Published
2022
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12. Coastal sea level anomalies and associated trends from Jason satellite altimetry over 2002-2018 [Data paper]

Author

Benveniste, J., Birol, F., Calafat, F., Anny, C., Dieng, H., Gouzenes, Y., Legeais, J. F., Leger, F., Nino, Fernando, Passaro, M., Schwatke, C., Shaw, A., and Climate Change Initiative Coastal Sea Level Team

Abstract

Climate-related sea level changes in the world coastal zones result from the superposition of the global mean rise due to ocean warming and land ice melt, regional changes caused by non-uniform ocean thermal expansion and salinity changes, and by the solid Earth response to current water mass redistribution and associated gravity change, plus small-scale coastal processes (e.g., shelf currents, wind & waves changes, fresh water input from rivers, etc.). So far, satellite altimetry has provided global gridded sea level time series up to 10-15km to the coast only, preventing estimation of sea level changes very close to the coast. Here we present a 16-year-long (June 2002 to May 2018), high-resolution (20-Hz), along-track sea level dataset at monthly interval, together with associated sea level trends, at 429 coastal sites in six regions (Northeast Atlantic, Mediterranean Sea, Western Africa, North Indian Ocean, Southeast Asia and Australia). This new coastal sea level product is based on complete reprocessing of raw radar altimetry waveforms from the Jason-1, Jason-2 and Jason-3 missions.

Published
2020

15. Coral mortality induced by the 2015–2016 El-Niño in Indonesia: the effect of rapid sea level fall

Author

Ampou, E. E., Johan, O., Menkès, Christophe, Nio, F., Birol, F., Ouillon, Sylvain, Andréfouët, Serge, Ecologie marine tropicale dans les Océans Pacifique et Indien (ENTROPIE [Réunion]), Centre National de la Recherche Scientifique (CNRS)-Université de La Réunion (UR)-Institut de Recherche pour le Développement (IRD), Laboratoire d'études en Géophysique et océanographie spatiales (LEGOS), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS), Institute for Marine Research and Observation, Littoral, Environnement, Télédétection, Géomatique (LETG - Rennes), Littoral, Environnement, Télédétection, Géomatique UMR 6554 (LETG), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-Université d'Angers (UA)-École pratique des hautes études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Brest (UBO)-Université de Rennes 2 (UR2), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Géographie et d'Aménagement Régional de l'Université de Nantes (IGARUN), Université de Nantes (UN)-Université de Nantes (UN)-Université de Caen Normandie (UNICAEN), Université de Nantes (UN)-Université de Nantes (UN), Research and Development Institute for Ornamental Fish Culture, Processus de couplage à Petite Echelle, Ecosystèmes et Prédateurs Supérieurs (PEPS), Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN), Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Muséum national d'Histoire naturelle (MNHN)-Institut Pierre-Simon-Laplace (IPSL (FR_636)), École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales [Toulouse] (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales [Toulouse] (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Muséum national d'Histoire naturelle (MNHN)-Institut Pierre-Simon-Laplace (IPSL (FR_636)), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales [Toulouse] (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), GOHS, Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Echanges Côte-Large (ECOLA), Ecologie marine tropicale des océans Pacifique et Indien (ENTROPIE [Nouvelle-Calédonie]), Ifremer - Nouvelle-Calédonie, Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut de Recherche pour le Développement (IRD [Nouvelle-Calédonie])-Université de la Nouvelle-Calédonie (UNC), Institut de Recherche pour le Développement (IRD)-Université de La Réunion (UR)-Centre National de la Recherche Scientifique (CNRS), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Normandie Université (NU)-Normandie Université (NU)-Université d'Angers (UA)-École Pratique des Hautes Études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Brest (UBO)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut de Géographie et d'Aménagement Régional de l'Université de Nantes (IGARUN), Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales [Toulouse] (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales [Toulouse] (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Institut de Recherche pour le Développement (IRD [Nouvelle-Calédonie])-Ifremer - Nouvelle-Calédonie, and Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de la Nouvelle-Calédonie (UNC)

Subjects
0106 biological sciences, 0303 health sciences, 010604 marine biology & hydrobiology, lcsh:QE1-996.5, lcsh:Life, 01 natural sciences, lcsh:Geology, 03 medical and health sciences, lcsh:QH501-531, 13. Climate action, lcsh:QH540-549.5, 14. Life underwater, lcsh:Ecology, [SDV.EE.BIO]Life Sciences [q-bio]/Ecology, environment/Bioclimatology, [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography, 030304 developmental biology
Abstract

The 2015–2016 El-Niño and related ocean warming has generated significant coral bleaching and mortality worldwide. In Indonesia, first signs of bleaching were reported in April 2016. However, this El Niño has impacted Indonesian coral reefs since 2015 through a different process than temperature-induced bleaching. In September 2015, altimetry data shows that sea level was at its lowest in the past 12 years, affecting corals living in the bathymetric range exposed to unusual emersion. In March 2016, Bunaken Island (North Sulawesi) displayed up to 85 % mortality on reef flats dominated by Porites, Heliopora and Goniastrea corals with differential mortality rates by coral genus. Almost all reef flats showed evidence of mortality, representing 30 % of Bunaken reefs. For reef flat communities which were living at a depth close to the pre-El Niño mean low sea level, the fall induced substantial mortality likely by higher daily aerial exposure a least during low tide periods. Altimetry data was used to map sea level fall throughout Indonesia, suggesting that similar mortality could be widespread for shallow reef flat communities, which accounts for a vast percent of the total extent of coral reefs in Indonesia. The altimetry historical records also suggest that such event was not unique in the past two decades, therefore rapid sea level fall could be more important in the dynamics and resilience of Indonesian reef flat communities than previously thought. The clear link between mortality and sea level fall also calls for a refinement of the hierarchy of El Niño impacts and their consequences on coral reefs.

Published
2017

18. The economic impact of subsidy phase out in oil exporting developing countries: a case study of Algeria, Iran and Nigeria

Author

Birol, F., Aleagha, A.V., and Ferroukhi, R.

Subjects
Algeria -- Energy policy, Iran -- Energy policy, Nigeria -- Energy policy, Energy policy -- Analysis, Subsidies -- Economic aspects, Business, Environmental issues, Petroleum, energy and mining industries
Abstract

A case study of the energy programs of Algeria, Iran and Nigeria is undertaken. Specifically, deregulation or the withdrawal of oil subsidy in these oil-producing countries is evaluated according to the effect on energy efficiency and supply. Results show that a subsidy phase-out would not only result in a more rational energy policy characterized by energy efficiency but would also assure these countries with enough oil-based revenues to support long-term development efforts.

Published
1995

19. Modelling the transport sector fuel demand for developing economies

Author

Birol, F. and Guerer, N.

Subjects
Developing countries -- Energy use, Transportation industry -- Energy use, Gasoline supply -- Economic aspects, Diesel fuels -- Supply and demand, Business, Environmental issues, Petroleum, energy and mining industries
Abstract

An empirical investigation of six developing nations' gasoline and diesel fuel demand is undertaken, with reference to the area's population, income and price. An econometric model revealing price and income elasticities underscores the need for independent analyses of gasoline and diesel oil demand. A projection of gasoline and diesel demand for these countries until the year 2010 shows that the transportation sector will provide the impetus for an energy demand increase, concurrent with these nations' economic development.

Published
1993

20. Analysing the cost of an OECD environmental tax to the developing countries

Author

Walker, I.O. and Birol, F.

Subjects
Global warming -- Economic aspects, Developing countries -- Tax policy, Environmental policy -- International aspects, Tax planning -- Economic aspects, Business, Environmental issues, Petroleum, energy and mining industries, Organisation for Economic Co-operation and Development -- Tax policy
Abstract

Global warming is a pressing environmental issue in the 1990's. Most studies, however, fail to consider the effects of proposed legislations, such as a carbon tax to reduce carbon dioxide emissions, on developing countries' economies. To convert its oversight, the probable effects of an OECD (Organization for Economic Cooperation and Development) carbon tax on developing countries were determined through an econometric model. Results indicate that the OECD and developing countries are significantly affected by the imposition of an environmental tax.

Published
1992

28. Satellite altimetry in coastal regions

Author

Stammer, D., Cazenave, A., Cipollini, P., Benveniste, J., Birol, F., Fernandes, M.J., Obligis, E., Passaro, M., Strub, P.T., Valladeau, G., Vignudelli, S., Wlikin, J., Stammer, D., Cazenave, A., Cipollini, P., Benveniste, J., Birol, F., Fernandes, M.J., Obligis, E., Passaro, M., Strub, P.T., Valladeau, G., Vignudelli, S., and Wlikin, J.

Published
2017

29. Getting rid of fossil-fuel subsidies is a triple-win solution

Author

Birol, F

Abstract

Fossil-fuel subsidies remain commonplace in many countries. They result in an economically inefficient allocation of resources and market distortions, while often failing to meet their intended objectives. Moreover, volatile energy markets and the prospect of higher fossil fuel prices mean that fossil-fuel subsidies threaten to be a growing liability to state budgets. This prospect has created a strong impetus for reform, strengthened by other associated benefits. But fossil-fuel subsidy reform is notoriously difficult as the short-term costs imposed on certain groups of society can be very burdensome and induce fierce opposition. If removing these subsidies were easy, it would probably already have happened.

Published
2016

30. BABAMA MEKTUBUM…

Author

HİÇ BİROL, F. Özlen

Abstract

Yrd. Doç. Dr. F. Özlen HİÇ BİROL

Published
2013

31. F. Ergun BİROL

Author

BİROL, F. Ergun

Abstract

F. Ergun BİROL

Published
2013

32. Corrosion Behaviour Of Twin Belt Cast En Aw 7075 Alloy

Author

Birol, Y., Birol, F., Yuksel, B., and Duygulu, O.

Abstract

The corrosion behaviour of the twin belt cast EN AW 7075 alloy is governed by intermetallic phases, namely Al-12(Fe,Cr,Mn)(3)Si, Mg2Si and CuAl2, and by Mg(Zn,Cu,Al)(2) precipitates. The former are responsible for pitting activities while the Mg(Zn,Cu,Al)(2) precipitates play a key role in intergranular corrosion. The very fine dispersion of Mg(Zn,Cu,Al)(2) precipitates in samples aged to peak hardness undergo coarsening, particularly along the grain boundaries, when the hot band samples are overaged. Overageing improves the resistance to intergranular corrosion while the samples in T6 temper suffer heavy attack along grain boundaries. While ageing treatments hardly produce any change in the features of the intermetallic particles, they nevertheless seem to impact the pitting response. This may be accounted for also by the precipitation activities which in turn, change the chemistry of the solid solution matrix. Overageing to the T73 temper implies a higher purity matrix and thus changes the microgalvanic effects when exposed to neutral chloride solutions.

Published
2013

33. Validation And Application Of Improved Coastal Altimetry Strategies Over The North Western Mediterranean Sea

Author

Bouffard, J., Roblou, L., Birol, F., Pascual, A., Fenoglio, M., Cancet, M., Morrow, Rosemary, Ménard, Y., Echanges Côte-Large (ECOLA), Laboratoire d'études en Géophysique et océanographie spatiales (LEGOS), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS), Océan du Large et Variabilité Climatique (OLVAC), S. Vignudelli, A.G. Kostianoy, P. Cipollini, and J. Benveniste

Subjects
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean, Atmosphere
Abstract

Improved coastal altimetry strategies are validated over the northwestern Mediterranean Sea with tide gauge (TG) records. Cross-comparisons made with a standard altimetric product highlight significant qualitative and quantitative improvements. The data processed by improved methods are able to detect smaller dynamical processes compared to the standard altimetric products. Lastly, the improved datasets allow us to recover additional coastal data, principally closer to the coast. The improved altimetric data have been used to monitor the Liguro-Provençal-Catalan current coastal dynamics in the Gulf of Lion. For the first time, we have both altimetric and sea surface temperature (SST) observations of intrusions impinging on the continental shelf following a strong southeasterly wind event, which are consistent with past studies based on numerical simulations.

Published
2011

35. Exploiting satellite altimetry in coastal ocean through the ALTICORE project

Author

Lebedev, S., Sirota, A., Medvedev, D., Khlebnikova, S., Vignudelli, S., Snaith, H.M., Cipollini, P., Venuti, F., Lyard, F., Bouffard, J., Cretaux, J.F., Birol, F., Roblou, L., Kostianoy, A., Ginzburg, A., Sheremet, N., E. Kuzmina, E., R. Mamedov, R., Ismatova, K., Alyev, A., Mustafayev, B., Lebedev, S., Sirota, A., Medvedev, D., Khlebnikova, S., Vignudelli, S., Snaith, H.M., Cipollini, P., Venuti, F., Lyard, F., Bouffard, J., Cretaux, J.F., Birol, F., Roblou, L., Kostianoy, A., Ginzburg, A., Sheremet, N., E. Kuzmina, E., R. Mamedov, R., Ismatova, K., Alyev, A., and Mustafayev, B.

Published
2008

37. Data assimilation for marine monitoring and prediction: the MERCATOR operational assimilation systems and the MERSEA developments

Author

Brasseur, P., Bahurel, P., Bertino, L., Birol, F., Brankart, J. M., Ferry, N., Loza, Svetlana, Remy, E., Schröter, Jens, Skachko, Sergey, Testut, C. E., Tranchant, B., van Leeuwen, P. J., Verron, J., Brasseur, P., Bahurel, P., Bertino, L., Birol, F., Brankart, J. M., Ferry, N., Loza, Svetlana, Remy, E., Schröter, Jens, Skachko, Sergey, Testut, C. E., Tranchant, B., van Leeuwen, P. J., and Verron, J.

Published
2005

39. Divergent pathways of cyclonic and anti-cyclonic ocean eddies

Author

Morrow, R, Birol, F, Griffin, D, Sudre, J, Morrow, R, Birol, F, Griffin, D, and Sudre, J

Abstract

Satellite altimetry is used to study the propagation pathways of warm and cold ocean eddies in different ocean basins. We consider eddies that have a life span longer than 3 months, and we present three regional studies: in the southeast Indian, the southeast Atlantic, and the northeast Pacific Oceans. The case studies show that simple theories for vortex propagation on a beta-plane work in regions where energetic eddies propagate though a weak background flow. Under these conditions, anticyclonic/cyclonic eddies propagate westward and equatorward/poleward. This divergence in the eddy pathways implies a net equatorward eddy heat flux, and has implications for the meridional transport of freshwater, carbon, nutrients, etc.

Published
2004
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42. Exploiting satellite altimetry in coastal ocean through the ALTICORE project

Author

Lebedev, S., primary, Sirota, A., additional, Medvedev, D., additional, Khlebnikova, S., additional, Vignudelli, S., additional, Snaith, H. M., additional, Cipollini, P., additional, Venuti, F., additional, Lyard, F., additional, Bouffard, J., additional, Cretaux, J. F., additional, Birol, F., additional, Roblou, L., additional, Kostianoy, A., additional, Ginzburg, A., additional, Sheremet, N., additional, Kuzmina, E., additional, Mamedov, R., additional, Ismatova, K., additional, Alyev, A., additional, and Mustafayev, B., additional

Published
2008
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44. Data assimilation for marine monitoring and prediction: The MERCATOR operational assimilation systems and the MERSEA developments

Author

Brasseur, P., primary, Bahurel, P., additional, Bertino, L., additional, Birol, F., additional, Brankart, J.-M., additional, Ferry, N., additional, Losa, S., additional, Remy, E., additional, Schröter, J., additional, Skachko, S., additional, Testut, C.-E., additional, Tranchant, B., additional, van Leeuwen, P. J., additional, and Verron, J., additional

Published
2005
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49. Corrosion of twin belt and twin roll cast AlMg3Mn alloys.

Author

Birol, F. and Birol, Y.

Subjects
*ALUMINUM alloys, *CORROSION in alloys, *ELECTROLYTIC corrosion, *CORROSION & anti-corrosives, *ELECTROLYSIS, *PITTING corrosion
Abstract

Corrosion of twin belt and twin roll cast AlMg3Mn sheet samples was investigated. The AlMg3Mn sheet samples submitted to immersion tests undergo alkaline pitting around Al–Fe and αc-Al(Fe,Mn)Si intermetallic particles in the twin roll and twin belt cast samples respectively. The weight loss is higher in the latter and increases with increasing homogenisation temperature for both groups. The twin roll cast AlMg3Mn samples reveal very few and small alkaline corrosion pits and hence much less weight loss in the immersion tests. The pitting activity is governed in the immersion tests by the microgalvanic corrosion activities between the intermetallic particles and the matrix while the anodic particles were inactive. [ABSTRACT FROM AUTHOR]

Published
2014
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